Lock for fire-arms



y (Hommel.)

W. H. BAKER.- Look for Fire-Arms.

NQ. 228,020; Y P tentedwlay 25,1880.

l ffy:

11mm-Ton.

UNITED STATES PATENT OFFICE.

YVILLIAM H. BAK-ER, OF SYRAOUSF, NEW YORK.

LOCK FOR FIRE-ARMS.

SPECIFICATION formingpart of Letters Patent No. 228,020, dated May 25,1880.

Application filed April 21, 1880. (No model.)

lo all whom t may concern 2 is a longitudinal section.

Be it known that I, WILLIAM H. BAKER, of Syracuse, in the county ofOnondaga and State of New York, have invented certain new and usefulImprovements in Locks for Fire-Arms, of which the following, inconnection with the accompanying drawings, is a f'nll and cleardescription.

rlhe object of my invention is to simplify and che-apen theconstruction, and at the same time produce a lock which shall beeficient in operation and not liable to get out of order.

It consists in placing in the rear of the standing breech of the gun aseparate piece of metal, which I term the tumbler-supporter,77 andwhich, when in place, forms a continuation of the frame and standingbreech of the gun; and in the general construction and arrangementofparts hereinafter more fully described.

Referring' to the drawings, Figure l is a side elevation of the breechpart of a dropdown gun embodying` my improvement. Fig.

Fig. 3 is a perspective view'of the tumblersupporter. Fig. 4 is aperspectiveview of the tumbler and the lower part of the hammer, andFig. 5 is a similar view of one of the triggers.

The tum bler-supporter is made substantially as shown in Fig. 3, andcorresponds in shape with the rear part of the frame,` of which it formsa continuation. It has at its upper cen trai part a square notch oropening, which receives the tang of the frame, and at its lower part asimilar notch, but of less depth, to receive the trigger-plate. It hasnear each side an elongated opening, c, extending entirely through fromfront to rear, within which the tumblers play.

Bearings b c are formed for the journals of the tumblers, the outsidebearings being open at the rear, as shown, for the purpose of permittingthe tumblers vto be easily placed in position, which is accomplished byturning them in proper position and then passing their shafts laterallythrough the openings b till their ends find bearings in the openings c.rlhe hammers when in place cover the openings b, to prevent the entranceof dirt and give a finished appearance to the arm.

The triggers consist of straight levers d, pro vided at their lower endswith ngerpieces e. They are pivoted to the frame at their upper ends inrear of the tumbler-supporter A, as shown at j'. Near their mid-lengththey have laterally-projecting studs g, which engage with the notches ofthe tum blers to hold the hammers in cocked and half-cocked'posi tions.The triggers are held forward by springs 7L, to throw them intoengagement with the notches in the tuinblers.

The Inainsprings are placed in holes drilled in the frame from the rear,which holes coincide with the lower parts of the openings a in thetumbler-supporter, and extend forward to, or nearly to, the hinge-pin,as shown in Fig. 2.

rlhe springs consist of long flat pieces of steel, curved as shown, sothat when their central parts' have a bearing in the holes their rearends are free to play on the tumblers. At their front ends they areprovided with notches or recesses on their upper sides, in which screwsor pins engage to hold them in place, and by which their tension can beregulated.

As shown in Fig. 2, the shaft of the tumbler is flattened on its lowerside. The adjustment is such that the spring finds abearing against theflattened shaft just before the completion of the stroke of the hammer;then, as the ham- 'mer completes its stroke, the tumbler is lifted offthe end of the spring, and the latter bears only on the forward angle ofthe shaft; then, when the stroke is completed, the pressure of thespring rocks the shaft backward till the tumbler vcomes in contact withthe end of the spring, when the projection of the trigger falls into thehalf-cock or safety notch of the tumbler, and the hammer is therebylocked and prevented from being driven forward against the rin'g-pin.

What I claim, and desire to secure by Letters Patent, is-

1. A lock for fire-arms, composed of a tumbleisnpporter recessed andprovided with bearings for the tumbler-shaft and arranged in rear of thestanding breech of the gun, and forming' acontinuation thereof,th'eframe bored from the rear, and the mainspring arranged in saidcavities in the frame, substantially as shown and described.

2. The combination ofthe tumbler-supporter and tumblers arranged in rearof the standing breech, the mainsprings arranged in cavities in thebottom of the frame, their free ends bearing against the tumblers, andthe triggers 1o pivoted to the tang in 'rear of the tumblersupportersand provided with Shoulders Which engage With the notches in thetumbiers, as shown and described.

WILLIAM H. BAKER. Witnesses:

PETER BURNS, GEO. LIVERMORE.

